Buy It Now If you purchase the eBook, you will be entitled to receive periodic updates as errata are fixed, for no additional charge. If you purchase a paper book, it will be shipped as soon as it comes into stock. If you purchase the combo, the paper book will be shipped when it is published. About the book The purpose of this book is to inspire practicing programmers with mathematical notions that are becoming increasingly relevant to daily coding practice. For example, types can be viewed as ...